Permutation-lock



(Model.)

B. L. MILLER &'J. J. ROSHONG.

PERMUTATION LOCK.

No. 463,685. Patented No 24, 1891.-

INVENTORJ;

' PV] NESSES.

A TTORNEK UNITED STATES EDIVARD L. MILLER AND JOHN J. ROSHONG, OFCANTON, OHIO.

PERM UTATlON LOCK.

SPECIFICATION forming part of Letters Patent No. 463,685, dated November24, 1891. Application filed January 5, 1891. Serial. No. 376,775.(ModeL) To all whom it may concern.

Be it known that we, EDWARD L. MILLER and JOHN J. ROSHONG, citizens ofthe United States, and residents of Canton, county of Stark, State ofOhio, have invented a new and useful Improvement in Commutation-Locks,

of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, making part of thisspecification.

This invention relates to an improvement in commutation-locks; and itconsists of certain features of construction and combination of parts,as will be hereinafter described, and pointed out in the claims.

Figure 1 of the accompanying drawings is a perspective of the lock; Fig.2, a plan view with cap of case removed, showing the interior mechanismof the lock; Fig. 3, a similar view showing the. latch-bolt andoperating mechanism; Fig. at, a perspective of a latch by which thecommutation-wheels are locked against rotation; Fig. 5, a plan view ofthe pawls by which the commutation-wheels are rotated and the huband'fiange-support; Fig. 6, a side view of the same on a fragment of thespindle; Fig. '7, a perspective of the spindle; Fig. 8, aplan ofcommutation-wheels; Fig. 9, a side view of the same; Fig. 10, a planview of a wheel to lock the commutationwheels; Fig. 11, a perspective ofkey to release the loclewheel to throw off or release the combination;Fig. 12, a spring to rotate the lock-wheels; Fig. 13, a perspective of apawl to lock the wheels.

Similar letters of reference indicate corresponding parts in all of thefigures of the drawings.

For the purpose of this application we have shown this invention asapplied to a mortiselock, Fig. 1 showing the inclosing case.

In the body A of the inclosingcase is placed the lockin g latch-bolt Band latch-plate a and latch-spring a. On the latch-bolt is provided alocking-bar a having at its end portions studs a which will be explainedfarther on. A gear-plate C, as shown in Fig. 2, is placed over the innerend portion of the latch-bolt and the bar a and secured in position bythe screws to", said plate having elongated perforations a through whichare passed the upper end portions of the studs a To the plate 0 isattached all of the commutative parts, as shown in Fig. 2.

The commutative wheels D D are similar, each of which is loosely securedto the plate 0 by a central stud-pin a and is provided with a givennumber of teeth a and'an outwardly-projected flange portion a andinwardly-projected slots at, the flange a to protect the teeth a frombeing injured by the studs a The wheels E E, by which thecommutation-wheels D D are held in position, are loosely secured to thegear-plate O by central stud-pins b, said wheels having a correspondingnumber of teeth 1), similar to and to engage the teeth a on thecommutation-wheels D D. The wheels E E are also provided with aprojecting finger b to engage a stop-pin 11 by which the wheels arestopped and prevented making more than one revolution in eitherdirection. shown in Fig. 12, is placed about the stud b, the end Ifsecured to the gear-plate O, and the other end 12 to the wheels E E. Aresisting or looking spring-pawl G, in form substantially as shown inFig. 13, having turned-up lugs b and 11 is pivotally secured to thegear-plate C, as shown in Fig. 2, the lugs-b to engage the teeth I) ofthe wheels E E. To hold the pawl in engagement with the teeth I) of thewheels E E, a spring 19 is provided, having its central portionsecuredto the gear-plate, as shown, by the screw d, the free ends resting onthe lugs If. The energy of the spring is exerted to hold the pawl inengagement with the teeth of the wheel.

To release the wheel E E to throw off the commutation, a key H isprovided, having a stem portion (1, a knob or head C1 and a ward orwards (1 that engage the lugs 12 By turning the key the wards to engagethe lugs b alternately will turn the pawl in its pivotal connection withthe gearplate, by which movement the lug b will be raised out and fromengagement with the tooth l) of the wheels E E. To rotate the wheels Dand D to unlock the latch-bolt B, spring-actuated pawls d and d areprovided, which are pivotally secured to a flange portion dfl'projectedfrom a hub 61, mounted on the knob-spindle J, as shown in Figs. 6 and 2.The middle portion of the spindle J is rounded, as shown at (Z to allowthe spindle to be rotated with- A coil-spring F, as

out moving the bolt ll. There is also provided on the spindle .l' a pinor feather (1", adapted to pass through a keyway in the gearplate underthe flange (1", (not shown,) by which the spindle is guided in itslongitudinal movement through the gear-plate. ()n the gear-plate isprovided stopping-post 72,, that engages a projecting lug d on theflange cl, by which the distance of rotation of the spindle isdetermined.

\Vhen it is desired to move the latch-bolt 3 by the knob K,the squareportion 7L2 of the spindle is drawn into the aperture 71/3 in thelatch-plate a, said plate having studs h, that engage the arms 7L5 ofthe latch-bolt B.

To describe the operation we will call attention to Fig. 2 of thedrawings, which illustrates the parts in position to lock the latclrboltin the doorjamb, the studs a resting against the flange portion a of thecommutation-wheels D D. To unlock the latch-bolt B the spindle'J isrocked or rotated to the right. The pawls (Z engaging the teeth a of thewheel D, continue the operation until the slot (0" is turned to aposition in line with the stud a This wheel maybe set in its engagementwith the wheel E, so as to require any previously determined number ofmovements of the spindle within the limits of the number of teeth in thewheel. Each movement of the wheel D will move the wheel E one toothunder the lug 11 01: the pawl G, which serves to hold the said wheel ina locked engagement with the wheel D. The movement of the wheel E aboutits spindle Z) will wind the spring F about said spindle. The finger bengaging the pin b will prevent the wheel E making more than onerevolution. The spindle J is now turned to the left, the pawl a engagingthe teeth a of the wheel D, and by repeating the movement until the slota. is brought in line with the stud a the wheel E, pawl G, and spring Fwill be brought in position, as just described in connection with thewheels D and E. The spindle J is now drawn forward, the pin (Z drawn tothe front side of the gear-plate, and the square portion 7L2 of thespindle J into the aperture 7L3 of the latclrplate a. A rotary movementof the spindle will now move the locking latch-bolt B, the studs apassing into the slots a". To secure the parts in this position, a latchL is provided, having wings h to engage the teeth a of the wheels D D,by which said wheels are held against rotation, and a flanged portion hto pass under the hub (1 by which the spindle is held againstlongitudinal movement. This slide is moved into and out of engagementwith the parts just mentioned by the knob or handle M.

To distribute the combination to lock the latch-bolt, the key II isbrought into action, the wards (Z serve to raise the lugs Z1 out of theteeth, and the spring F will turn the wheel back until stopped by thefinger engaging the pin I), the other side or set of wheels to takingthe position shown in Fig. 2.

The commutation may be varied by remov ing the pin a and changing theengagement of the wheels D D with the wheels E E by throwing themforward or back, so as to require three movements of the spindle to theleft and two to the right to bring the slots a" of the wheels D D.inline with the studs a or any other commutation desired.

llavin g thus fully described the nature and Obj eet of our invention,what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a commutation-look, with the inelosing ease andalocking lateh-bolt having studs a of the commutation-wheels D D, havingslots a, adapted to receive the studs (4 wheels E E to engage saidwheels D D to resist rotation and to throw off the commutation, andsprings for rotating said wheels E E in one direction.

2. The combination, with an inelosing ease and a locking latch-bolt, ofthe studs a a gearplate C, having elongated apertures a through whichsaid studs pass to engage commutationwheels D and D, loekingavheels Eand E to engage said commutation-wheels, springs F to rotate saidlocking-wheels in one direction, pawls G to resist the rotary movementof said wheels, and actuating-pawls d" and (Z and spindle J, by whichthe commutation-wheels are rotated in opposite directions into positionto release or unlock the latch-bolt, substantially as set forth.

The combination, in a door-lock, of an inclosing case, a lockinglatch-bolt, commutation-wheels D D, wheels E E to engage the wheels D Dto resist rotation and to distribute or throw off the commutation, pawlsG to engage and resist the rotation of the wheels E E, a key by whichthe pawls G are thrown out of engagement with said wheels, and springs Fto reversely rotate said wheels to throw off or distribute thecombination, sub stantially as described, and for the purpose set forth.

at. The combination, in a commutation-lock, with the inelosing easeandalockinglateh-bolt, of the commutationavheels D D, wheels E E toengage said wheels to resist rotation and to throw 01f the commutation,and the latch L to engage the commutation-wheels to hold or lock themagainst rotation, substantially as described, and for the purpose setforth.

In testimonywhereof we have hereunto set our hands this 31st day ofDecember, A. D. 1890.

EDWARD L. MILLER. JOHN J. ROSIIONG.

Witnesses:

W. K. MILLER, (/IIAS. R. MILLER.

